Hi Alex, it still didnt work, are You sure that there are no firewall rules to deny users from Europe? I tried it via US proxy and it works.
thanks! Dalibor 2013/11/22 AlexTsekenis <[email protected]>: > Hi Dalibor, > > Thanks. I'm surprised you cannot access the site, no issues here from > multiple computers. Maybe try from the home page http://www.saltechips.com/ > and clearing your cache. Please let us know if you are still having issues, > there is a wealth of information on the site including equations, plots etc. > > We have data for the first 7k minutes (6810 to be exact), but I would like > to collect more before drawing any conclusions. The plan is to do curve > fitting on the collected data points, thus suppressing noise and other > artefacts. If you follow our theoretical working you will see that the light > emitted is falling exponentially, so we expect the data points to fit such a > curve: > http://www.ibm.com/developerworks/rational/library/mar06/cantor/fig7.gif The > sampling rate of the data published is currently slow (1 point per week). > This Sunday is time for the second measurement. I will need to judge whether > to increase or decrease the sample rate then. > > Yes, you are right on current affecting sputtering rate. Also the gas > pressure and composition as well as the electrode material may I add. This > is mentioned in the description and an empirical equation is given. However > the method we are using is independant from these factors - we are just > interested in the rate that the glass becomes darker. So the experiment can > be repeated for different currents and tube constructions to optimise the > tube and operating point. > > We are running it at about 4mA with a constant current sink. This makes the > glow reach about 3/4 of the tube's length. In other words the tube is in the > normal glow region and we are 1/4 away from abnormal glow. In the normal > glow region increasing the current increases the area of cathode being > covered by the glow. These conditions were selected to best replicate > typical usage of this particular tube, thus giving the most accurate > lifespan figure possible. > > How is website access now? > > Alex > > > On Friday, November 22, 2013 2:16:00 PM UTC, Dalibor wrote: >> >> Hi Alex, >> >> this is pretty interesting! I cant access the website, it is probably >> unavailable now, but the stream is clear! Do You have any graph how >> the absorbance rise during that those 7000 minutes? >> >> Are You running it on specs current or on higher to make the process >> faster? The sputtering is not directly proportional to current, so it >> would be nice to have data for currents from datasheet.. >> >> Thanks! >> >> Dalibor >> >> 2013/11/22 AlexTsekenis <[email protected]>: >> > It is my great pleasure to announce that the SHINE (SALTechips IN-13 >> > Endurance) experiment is now online. >> > >> > For the first time since the Cold War era we are able to rigorously >> > measure >> > the end of life of a nixie tube due to darkening of its glass envelope. >> > We are super nixited as we can now accurately answer the frequent >> > question >> > of the lifespan of a given nixie. >> > >> > The experimental method relies upon a theoretical basis and custom >> > precision >> > instrumentation developed by SALTechips specifically for this purpose. >> > In summary, we are monitoring the optical absorbance demonstrated by the >> > envelope of the tube as cathode material is being deposited by >> > sputtering. >> > The absorbance increases with time, thereby causing the tube to become >> > dimmer. At some time a brightness threshold is reached which we treat as >> > the >> > end of life of the tube. >> > The method and experimental setup are described in detail here: >> > http://www.saltechips.com/lab/ >> > This time we are measuring the IN-13 bargraph tube that is of immediate >> > interest to us, although the tools and techniques can be used on most >> > glow >> > discharge tubes. >> > >> > We anticipate the experiment that is currently in progress to take a >> > while.Data is plotted live as it is collected and we also have a live >> > stream >> > of the instrumentation screens available 24/7(follow link above or >> > directly >> > here: http://www.ustream.tv/channel/from-the-salte-lab). These are the >> > same >> > screens we use to record data! Nearly 7000 minutes into the experiment >> > and >> > we are already collecting valuable data. >> > >> > The future of this method is bright as it is applied to measure and >> > compare >> > other nixie tubes! >> > >> > >> > Alex >> > >> > >> > >> > -- >> > You received this message because you are subscribed to the Google >> > Groups >> > "neonixie-l" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> > an >> > email to [email protected]. >> > To post to this group, send an email to [email protected]. >> > To view this discussion on the web, visit >> > >> > https://groups.google.com/d/msgid/neonixie-l/b16aa111-40c9-49f9-b6c5-f0a5b4a788a0%40googlegroups.com. >> > For more options, visit https://groups.google.com/groups/opt_out. >> >> >> >> -- >> Dalibor Farny >> http://dalibor.farny.cz > > -- > You received this message because you are subscribed to the Google Groups > "neonixie-l" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send an email to [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/732ecf75-a44a-4ffb-b877-9f3bfad6072b%40googlegroups.com. > > For more options, visit https://groups.google.com/groups/opt_out. -- Dalibor Farny http://dalibor.farny.cz -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CA%2BnkT5raxrTnFCjShmghV__kTonyM%2BMz_QMSewsoPF8V9HnxGw%40mail.gmail.com. For more options, visit https://groups.google.com/groups/opt_out.
